This article presents person-oriented and variable-oriented approaches to data analysis. To illustrate these two approaches and the types of information they provide the researcher, data from 3,558 control group youth from the National Cross-Site Evaluation of High Risk Youth Programs were analysed. The relationship, over time, between parent attitudes and gender as it relates to youth alcohol ...

The paper deals with some important aspects of continuous systems modelling approaches. Namely the traditional approach is based on block oriented schemes in which causal relations play an important role. However this causality is artificially generated in order to fulfil appropriate conditions for simulation on conventional sequential computers. Fortunately new concepts which are based on obje...

Object–oriented views are important mechanisms that not only provide logical data independence, data hiding and security, but also are means of data integration, and simulating schema changes. Although several approaches to object–oriented views were proposed in scientific publications only a few commercial object– oriented databases support them. These approaches differ in functionality offere...

The question we present here is about two different design approaches: task-oriented and function-oriented. Briefly, task-oriented design needs task-related information analysis and function-oriented design needs the analysis of functional structure of work domain. It is thus desirable to consider the usefulness of analysis methods in terms of design approaches. For this, we present three analy...

A number of proposals for object-oriented extensions to VHDL deal with object-oriented extensions to support high-level modeling of data. They provide features for expressing data abstraction, encapsulation, and inheritance with polymorphism— features that are central to object oriented techniques. There are two approaches to object-oriented data modeling: class-based and programming by extensi...

We propose in this article an object-oriented approach to rewriting queries using views. Our approach aims to mitigate certain limitations of existing query rewriting approaches. Among these limitations, the inconsideration of certain types of object-oriented complex queries or the lack of uniformity of this approaches compared to the object-oriented model.

UML, and other object-oriented approaches to system specification and design, are increasingly popular in industry. Many attempts have been made to formalise either the notations, the system models produced using these notations, or both. However, there have been no attempts to compare the expressiveness of the formal approaches. This paper compares Z and Object-Z approaches to object-oriented ...

Context: The integration of aspect oriented modeling approaches with model‐driven engineering process achieved through their direct transformation to aspect‐oriented code is expected to enhance the software development from many perspectives. However, since no aspect modeling technique has been adopted as the standard while the code generation has to be fully dependent on the input model, it be...